32-Bit audio DSP simplifies high-performance, cost-sensitive designs

The CS47048 audio system-on-chip processor from Cirrus Logic combines a 32-bit audio DSP, high-performance multichannel audio codec and a digital audio receiver/transmitter in a single IC. Targeted at high-performance, cost-sensitive audio amplifier applications, the device is designed to allow designers to reduce component count and more easily achieve system requirements without sacrificing audio quality.

The device's four-channel ADC has a 105-dB dynamic range and -98-dB THD+N, and the eight-channel DACs offer 108 dB of dynamic range and a -98-dB THD+N. Integrated SRCs enable operation with audio sources at any sample rate up to 192 kHz through either the on-chip 192-kHz S/PDIF receiver and transmitter or the standard serial audio ports.

The CS47048 is programmed using the company's DSP Composer GUI development and preproduction tuning tool. Processing chains may be designed using a drag-and-drop interface to place/utilize functional macro audio DSP primitives and custom audio filtering blocks, and the resulting software image is downloaded to the DSP via a serial control port.

The CS47048 is packaged in a 100-pin LQFP and priced at $6.12 in quantities of 10,000, with samples available in the 4th quarter.

Cirrus Logic , (800) 625-4084,

Related links:
CS47048 Product Data Sheet (PDF)
CS47048 Product Bulletin (PDF)

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